Amazon.com : Oregon 23820 Sure Sharp Chainsaw Manual Filing/Sharpening Guide , grey : Saw Sharpening Kit : Patio, Lawn & Garden
Like Oaktree, we've used the style for years. Clamp on bar, no need to remove the chain. Inspect the chain before starting, find the worst link. Count the strokes it takes it sharpen it. Give all of the other teeth the same amount on both sides. Otherwise, it may cut crooked in a larger log. Used the depth gauge w/flat file for the raker's. After a while, experience will let you take so many strokes with a flat file, compared to how many you made with the round file. Mark the first tooth sharpened with a lumber crayon, or paint pen, so you know where to stop. Been using this style for 40+ years around here.
Easiest to hold the saw in a Vise. Bought some used vise's at auctions, and mounted it on the carry-all for in field sharpening, if needed. Carried another sharpener, extra files in the tool box on the tractor used for wood cutting. Dad bought the first one's through a place in PA. back in the late 60's, early 70's called Zip-Penn. The name has changed, and can't recall what it is now. They worked so well, bought several more when they would have them on sale to have "just in case". Still a new one hanging in his sharpening shop, he made for sharpening blades for the band mill. Bought chain files in bulk, by the dozen. Then, were USA made, not sure about now. Still have 3-4 boxes of NIB files, purchased when they would run sales. Dad passed years ago, and my wood cutting amounts to cutting tree's around the hayfield, or cutting up limbs that have fell off neighbors trees surrounding that field. Enough on hand, to last me the rest of my life.